The condition of the windshield wiper switch assembly is detected and sent to the steering sensor in this circuit.
for TFTM Made
for GTMC Made
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / Steering Angle Sensor / Data List.
Read the Data List according to the display on the GTS.
for NR Series:
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Wiper OFF Switch | Front wiper switch OFF position signal | OFF or ON | OFF: Front wiper switch not in OFF position
ON: Front wiper switch in OFF position |
- |
| Wiper Auto/Int Switch | Front wiper switch INT position signal | OFF or ON | OFF: Front wiper switch not in INT position
ON: Front wiper switch in INT position |
- |
| Wiper Lo Switch | Front wiper switch LO position signal | OFF or ON | OFF: Front wiper switch not in LO position
ON: Front wiper switch in LO position |
- |
| Wiper Hi Switch | Front wiper switch HI position signal | OFF or ON | OFF: Front wiper switch not in HI position
ON: Front wiper switch in HI position |
- |
| Wiper Mist Switch | Front wiper switch MIST position signal | OFF or ON | OFF: Front wiper switch not in MIST position
ON: Front wiper switch in MIST position |
- |
| Washer Switch | Washer switch Fr WASH position signal | OFF or ON | OFF: Washer switch not in Fr WASH position
ON: Washer switch in Fr WASH position |
- |
| Intermittent Time Volume | Intermittent time adjustment switch condition | Shortest, Shorter, Longer or Longest | Shortest: P4
Shorter: P3 Longer: P2 Longest: P1 |
* |
*: Refer to Inspection for each position of the switch. (w/ Intermittent Time Adjustment Switch)
| Tester Display |
|---|
| Wiper OFF Switch |
| Wiper Auto/Int Switch |
| Wiper Lo Switch |
| Wiper Hi Switch |
| Wiper Mist Switch |
| Washer Switch |
| Intermittent Time Volume |
except NR Series:
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Wiper OFF Switch | Front wiper switch OFF position signal | OFF or ON | OFF: Front wiper switch not in OFF position
ON: Front wiper switch in OFF position |
- |
| Wiper Auto/Int Switch | Front wiper switch INT position signal | OFF or ON | OFF: Front wiper switch not in INT position
ON: Front wiper switch in INT position |
- |
| Wiper Lo Switch | Front wiper switch LO position signal | OFF or ON | OFF: Front wiper switch not in LO position
ON: Front wiper switch in LO position |
- |
| Wiper Hi Switch | Front wiper switch HI position signal | OFF or ON | OFF: Front wiper switch not in HI position
ON: Front wiper switch in HI position |
- |
| Wiper Mist Switch | Front wiper switch MIST position signal | OFF or ON | OFF: Front wiper switch not in MIST position
ON: Front wiper switch in MIST position |
- |
| Washer Switch | Washer switch Fr WASH position signal | OFF or ON | OFF: Washer switch not in Fr WASH position
ON: Washer switch in Fr WASH position |
- |
| Intermittent Time Volume (Shortest) | Intermittent time adjustment switch P4 position signal | OFF or ON | OFF: Intermittent time adjustment switch not in P4 position
ON: Intermittent time adjustment switch in P4 position |
* |
| Intermittent Time Volume (Shorter) | Intermittent time adjustment switch P3 position signal | OFF or ON | OFF: Intermittent time adjustment switch not in P3 position
ON: Intermittent time adjustment switch in P3 position |
* |
| Intermittent Time Volume (Longer) | Intermittent time adjustment switch P2 position signal | OFF or ON | OFF: Intermittent time adjustment switch not in P2 position
ON: Intermittent time adjustment switch in P2 position |
* |
| Intermittent Time Volume (Longest) | Intermittent time adjustment switch P1 position signal | OFF or ON | OFF: Intermittent time adjustment switch switch not in P1 position
ON: Intermittent time adjustment switch in P1 position |
* |
*: Refer to Inspection for each position of the switch. (w/ Intermittent Time Adjustment Switch)
| Tester Display |
|---|
| Wiper OFF Switch |
| Wiper Auto/Int Switch |
| Wiper Lo Switch |
| Wiper Hi Switch |
| Wiper Mist Switch |
| Washer Switch |
| Intermittent Time Volume (Shortest) |
| Intermittent Time Volume (Shorter) |
| Intermittent Time Volume (Longer) |
| Intermittent Time Volume (Longest) |
The GTS display changes correctly in response to the windshield wiper switch assembly operation.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the windshield wiper switch assembly.
Inspect the windshield wiper switch assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the steering wheel switch housing.
Inspect the steering wheel switch housing.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the A56 windshield wiper relay assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I46-2 (2S) - A56-3 (2S) | Always | Below 1 Ω |
| I46-2 (2S) or A56-3 (2S) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I220-2 (2S) - A56-3 (2S) | Always | Below 1 Ω |
| I220-2 (2S) or A56-3 (2S) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG